嗳气者，多因胃虚窒塞，气不升降，过极则展舒，而浊气上出于胃也。有因食物停
胃而夹酸臭者，治宜消食，推扬谷气。有因胃中滞气不舒，而无酸臭者，治宜行气调胃
和中。有因痘毒未出，火邪在内萌动所致者，治宜发痘。有因既出之后，而热毒犹郁
于中，欲发不得发而然者，此宜清胃。若夫恶心干呕，其候虽近，其寒实深，盖冲任虚
火上冲，犯于清道，乃脏败毒攻之恶候也。
夫喘而加急，无问朝候见之，此为恶症。然有虚实之分，如气微息短无力者为
虚；如声粗大，气粗且长者为实。盖肺居气之至高，喜清虚而不受室碍，若邪气相干则
窍壅塞而发喘。然有中气不足者；有肺气将绝者；有痘毒未出，枭炎上攻者；有痰涎紧
并者；更有饮食倍伤，气壅于肺者；有卒犯风寒而外束者；有大便久闭而内逆者；有因
泻后而元气下陷者；虚火上壅者∶有因吐后阳虚，不能按纳阴火，火逆上冲者；有因过
补无补，虚气无根据者。种种诸因，并宜分源异治可也。至如泻利不已，腹胀烦燥，汗出
如油，发润作喘者，不治。总之，多因枭毒煽烈，玄池耗灼，肺火输降，火自升迫，喘
斯作矣。
夫咳嗽之所以累人者，以其难于立止也。然欲治肺而止嗽，则益害肺而嗽愈甚，
盖肺受病而咳嗽者，必有因以迫之，治其因则嗽自愈。若不详所自，而徒事于肺，则气
无所归，或邪无所散，肺愈苦而咳嗽愈甚矣。如痘初咳嗽者，因痘疮挟君相二火，上
熏于肺，肺叶焦举。故气逆而咳者，有声无痰之谓也。若脾虚不能运化而生痰，痰生则
嗽，嗽者，无声有痰之谓也。治法无痰要有痰，有痰要无痰。可见，治咳又难于治嗽
也。在发热之时，先有咳嗽之症者，此为外感风邪之故，治宜疏散。在将发疮痍之时
者，是火邪欲达之故，治宜托痘。既见咳嗽更增者，是喉咙有痘，故淫淫如痒，习习如
鲠，治宜利咽。若灌浆而咳者，是肺气虚弱，治宜参 甘桔之类。若靥后而犹咳者，
是肺逆不收，治宜润肺清毒。若落痂后而多嗽者，治宜滋肺化痰，更有身热而咳嗽连声
鼻血者，是余毒在肺也，治宜清热解毒，有因久嗽阴亏，痰水粘滞，气不升降，两胁刺
痛者，治宜养阴清肺，使痰气流通，而痈咳
俱愈也。至若声如水鸡声者，如拽锯者，口中痰涎胶塞者，并皆不治。
嗳气，多是因为胃气虚弱导致气机阻滞，气的升降功能失常，极度不适时通过舒展身体来缓解，使得浊气从胃中向上溢出。有的因为食物停滞在胃中并夹杂酸臭气味，治疗应当消食导滞，推动谷气的运行。有的因为胃中气机郁滞不畅，但没有酸臭味，治疗应当行气调胃、调和脾胃。有的因为痘毒未能透发，火邪在体内萌动所致，治疗应当促使痘疹发出。有的因为痘疹已经发出之后，热毒仍然郁结在中焦，想要发散却无法发散而造成的，这种情况应当清泻胃热。至于恶心干呕，虽然症状表现相近，但其病机寒热虚实深重，这是因为冲任二脉虚火上冲，侵犯清窍，属于脏腑败坏、毒邪攻心的危重证候。
喘促且气息急促，无论何时出现，都属于恶症。然而有虚证和实证的区分，如呼吸微弱、气息短促无力的是虚证；如声音粗大、气息粗重且长的是实证。肺位于人体气机的最高处，喜欢清虚通畅而不受阻碍，如果邪气干扰，就会导致气道壅塞而引发喘息。其中原因有中气不足的；有肺气即将衰竭的；有痘毒未出，邪火上炎的；有痰涎紧聚的；更有因饮食过度损伤，气机壅塞于肺的；有突然遭受风寒侵袭而外束肌表的；有大便长期闭塞导致气机上逆的；有因腹泻后元气下陷的；有虚火上壅的；有因呕吐后阳气虚弱，不能制约阴火，导致火气上逆的；有过用补药反而无补，导致虚气无所依附的。各种各样的病因，都应当分清源头，区别治疗。至于腹泻不止，腹部胀满烦躁，出汗如油，头发湿润并伴有喘息的情况，属于不治之症。总之，多因痘毒炽烈，耗灼真阴，肺火失于肃降，火气自升逼迫，喘息因此发作。
咳嗽之所以让人困扰，是因为它难以立即停止。然而如果想单纯治肺来止咳，反而会进一步伤害肺脏，使咳嗽更加严重，因为肺生病引起咳嗽，必定有诱因迫使它，治疗其诱因则咳嗽自然痊愈。如果不详查病因，只片面针对肺部治疗，那么气机无处归依，或者邪气无处消散，肺脏更加痛苦，咳嗽也会更加严重。例如痘疹初期出现咳嗽，是因为痘疮夹带君火和相火，上熏于肺，导致肺叶焦枯。所以气逆而咳，是有声音没有痰液，这称为“咳”。如果脾虚不能运化水湿而生痰，痰生则引发咳嗽，这是没有声音只有痰液，这称为“嗽”。治疗方法是：无痰时要生出痰液（以排出邪气），有痰时要消除痰液。由此可见，治疗“咳”比治疗“嗽”更难。如果在发热期间，先出现咳嗽症状的，这是外感风邪的缘故，治疗应当疏散风邪。在痘疹将要发出之时出现的，是火邪欲向外透达的缘故，治疗应当托举痘毒。痘疹已见但咳嗽增多的，是因为喉咙部位有痘疹，感觉瘙痒如虫行，如有异物梗阻，治疗应当利咽消肿。如果处于灌浆期出现咳嗽的，是肺气虚弱，治疗应当用人参、甘草、桔梗之类的药物。如果痘疹结痂后仍然咳嗽的，是肺气上逆不能收敛，治疗应当润肺清解余毒。如果脱痂后仍然多咳嗽的，治疗应当滋养肺阴、化痰，更有身热且咳嗽连声并伴有鼻血的，是余毒残留于肺，治疗应当清热解毒。有因久咳导致阴虚，痰水粘滞，气机升降失常，两胁刺痛的情况，治疗应当养阴清肺，使痰和气流通，这样咳嗽和胸痛都能痊愈。至于咳嗽声音像水鸡叫的，像拉锯一样的，口中痰涎胶结堵塞的，都属于不治之症。
Belching (Ouyang) is mostly caused by deficiency of Stomach Qi leading to obstruction, where the ascending and descending functions of Qi are impaired. When extremely uncomfortable, the body stretches to relieve tension, causing turbid Qi to ascend from the Stomach. In cases due to food stagnation in the Stomach accompanied by sour and foul odor, treatment should focus on digesting food and promoting the movement of Grain Qi. In cases due to stagnant Qi in the Stomach without sour or foul odor, treatment should involve moving Qi, regulating the Stomach, and harmonizing the Spleen and Stomach. In cases caused by unexpressed variola toxin with Fire pathogen stirring internally, treatment should aim to promote the eruption of the rash. In cases where the rash has erupted but heat-toxin remains郁 (stagnant) in the Middle Jiao, unable to fully express itself, treatment should clear Stomach Heat. As for nausea and dry heaving, although the symptoms appear similar, the pathology is complex; it is often due to deficient Fire from the Chong and Ren vessels rushing upward, invading the clear orifices, representing a critical condition of organ failure and toxin attack.
Wheezing (Chuan) with urgency, appearing at any time, is considered a malignant symptom. However, there is a distinction between deficiency and excess patterns. Weak respiration with shortness of breath and lack of strength indicates deficiency; loud voice with coarse and prolonged breathing indicates excess. The Lung resides at the highest level of Qi, preferring clarity and emptiness while resisting obstruction. If pathogens interfere, the airways become blocked, leading to wheezing. Causes include insufficiency of Middle Qi; impending exhaustion of Lung Qi; upward attack by variola toxin before eruption; accumulation of phlegm-saliva; excessive dietary injury causing Qi stagnation in the Lung; sudden invasion of Wind-Cold binding the exterior; long-term constipation causing internal Qi reversal; collapse of Yuan Qi following diarrhea; upward congestion of deficient Fire; Yang deficiency after vomiting failing to anchor Yin Fire, causing Fire to rush upward; and overuse of tonics resulting in rootless deficient Qi. All these various causes require differentiation of origin and distinct treatments. Diarrhea that does not cease, abdominal distension with irritability, sweating like oil, moist hair accompanied by wheezing, are untreatable. Generally, this results from intense variola toxin consuming Yin essence, loss of Lung's descending function, and rising Fire forcing Qi upward, thus inducing wheezing.
Cough (Ke) is troublesome because it is difficult to stop immediately. However, attempting to stop cough solely by treating the Lung will further damage the Lung and worsen the cough, as coughing due to Lung disease must have an underlying cause; treating the cause allows the cough to heal naturally. Failing to investigate the source and merely targeting the Lung leaves Qi without direction and pathogens without dispersion, suffering the Lung more and worsening the cough. For instance, cough during the initial stage of variola is due to the rash carrying Ministerial Fire and Sovereign Fire, scorching the Lung, causing the Lung lobes to become dry and elevated. Thus, Qi rebellion causes coughing with sound but no phlegm, termed "Ke". If Spleen deficiency fails to transform fluids, generating phlegm which then triggers coughing, this is characterized by phlegm but no sound, termed "Sou" (phlegmy cough). Treatment principles: when there is no phlegm, generate phlegm (to expel pathogens); when there is phlegm, eliminate it. Thus, treating "Ke" is more difficult than treating "Sou". Cough appearing first during fever is due to external Wind-Pathogen, requiring dispersing treatment. Cough appearing when the rash is about to emerge is due to Fire Pathogen seeking to reach the surface, requiring support for eruption. Increased cough after the rash appears is due to lesions in the throat causing itching and foreign body sensation, requiring soothing the throat. Cough during the pustule-filling stage indicates weak Lung Qi, treated with Ginseng, Licorice, and Platycodon. Persistent cough after crusting indicates rebellious Lung Qi failing to descend, treated with moistening the Lung and clearing residual toxins. Frequent cough after scab falling indicates need to nourish Lung Yin and resolve phlegm. Cough with continuous sounds, fever, and epistaxis indicates residual toxin in the Lung, treated with clearing heat and detoxifying. Chronic cough leading to Yin deficiency, sticky phlegm-water, impaired Qi dynamics, and stabbing pain in both hypochondria requires nourishing Yin and clearing Lung heat to facilitate phlegm and Qi flow, resolving both cough and pain. Cough sounding like a water-bird, sawing wood, or with gelatinous phlegm blocking the mouth are all untreatable.